Duchess of Cambridge looked immaculate the morning after attending a vigil in Thiepval, France.

Prince Harry, Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge during the service to mark the 100th anniversary of the beginning of the Battle of the SommeFRANCOIS MORI/AFP/Getty Images

The Duchess of Cambridge made a second stylish appearance for the 100th anniversary of the Battle of the Somme on Friday morning (30 June) in France, oozing feminine elegance in a nude lace dress and fascinator hat.

Middleton looked ladylike in a custom-made dress featuring a peplum detail, Peter Pan collar and a black underlay. She completed the ensemble with her trustee black court shoes, a simple clutch bag and a recycled hat by Lock & Co.

The mother-of-two kept her hair and make-up simple and sophisticated, wearing her favourite chic updo of recent times and distinctive eyeliner along with some pearl drop earrings for the finishing touches.

The Duchess, 34, looked equally as stylish as her Friday morning appearance in an understated, chic grey coat to reflect the downcast mood. The 1970s-esque monochrome coat featured a zig-zag pattern – a distinct trademark of the luxury Italian fashion house Missoni – with a single breast and demure knee-length cut, costing £2994.

William reflected on the tragic loss of life on July 1 1916 in a poignant address written by Birdsong novelist Sebastian Faulks. He told the assembled guests: "We lost the flower of a generation; and in the years to come it sometimes seemed that with them a sense of vital optimism had disappeared forever from British life.

He added: "It was in many ways the saddest day in the long story of our nation. Tonight we think of them as they nerved themselves for what lay ahead. We acknowledge the failures of European governments, including our own, to prevent the catastrophe of world war."

Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge and Prince Harry attend part of a military-led vigil to commemorate the 100th anniversary of the beginning of the Battle of the SommeYui Mok - Pool/Getty Images